Results 61 to 70 of about 19,911 (268)

Asymmetric fiber taper for narrow linewidth comb filter [PDF]

, 2016
The employment of asymmetric optical fiber taper as a means for producing narrow linewidth comb filter is proposed and demonstrated. Fiber taper with different values set for the up-taper and down-taper transition regions was used to produce narrow ...
Abu Bakar, Muhammad Hafiz, Isa, N. S., Latif, A. A., Mahdi, Mohd Adzir, Mohamed Halip, N. H.   +4 more
core   +2 more sources

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy, Charlie J. Patrickson, Thomas Poirier, James H. Edgar, Bruno Lopez‐Rodriguez, Viktor Ivády, Isaac J. Luxmoore   +6 more
wiley   +1 more source

Harnessing the Orientation of Columnar Discotic Liquid Crystals for Narrowband Blue Emission with Enhanced Out‐Coupling Efficiency Toward Improvement of SP‐OLEDs Performance

Advanced Functional Materials, EarlyView.
Solution‐processed OLEDs containing discotic liquid‐crystalline MR‐TADF emitters are reported. Supramolecular self‐assembly induces homeotropic columnar alignment, enforcing preferential horizontal orientation of the emitter transition dipole moment in spin‐coated films, which leads to an enhancement in the device light outcoupling efficiency while ...
Joydip De, Abhishek Kumar Gupta, Džiugas Litvinas, Francisco Tenopala‐Carmona, Matthias Lehmann, Malte C. Gather, Eli Zysman‐Colman   +6 more
wiley   +1 more source

PULSED KGd(WO4)2 RAMAN LASER: TOWARDS EMISSION LINEWIDTH NARROWING

Приборы и методы измерений, 2015
The linewidth of a KGd(WO4)2 pulsed Raman laser is analysed experimentally for different configurations of the Raman and pump resonators: with narrow and broadband pump emission profiles, with and without linewidth narrowing elements in the Raman laser ...
V. G. Savitski
doaj  

Pump-induced stimulated superradiant Smith-Purcell radiation with ultra-narrow linewidth

eLight
Lasers with the gain medium of gas, liquid, semiconductor, and solid could generate coherent light with rather narrow spectral linewidth, which play an important role in the fields of communication, measurement, sensing, and so on. Although free electron
Yuechai Lin, Jinyu Li, Fang Liu, Weisi Meng, Pan Pan, Hanqi Feng, Wei Zhang, Xue Feng, Kaiyu Cui, Jinjun Feng, Yidong Huang   +10 more
doaj   +1 more source

All-optical wavelength-tunable narrow-linewidth fiber laser

, 2017
Parameter regulations of narrow-linewidth fiber lasers in frequency domain has drawn considerable interests for widespread applications in the light quantum computing, precise coherent detection, and generation of micro-waves. All-optical methods provide
Cao, Yulong, Gao, Lei, Huang, Shihong, Lan, Tianyi, Li, Yujia, Zhu, Tao   +5 more
core   +1 more source

KW narrow linewidth all fiber laser [PDF]

AIP Conference Proceedings, 2019
Recently, high power narrow linewidth fiber lasers are interested in wavelength beam combining. In narrow linewidth fiber laser, Stimulated Brillouin Scattering is the main power limiting factor. A Stimulated Brillouin Scattering suppressing method by modulating frequency distribution was proposed and examined both experimentally and theoretically. The
Liming Zhang, Kun Zhang, Hong Zhao, Yao Li, Chen Zhu, Dayong Zhang, Ping Gao, Yan Liu, Nianjiang Chen, Shouhuan Zhou   +9 more
openaire   +1 more source

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz

Advanced Materials, EarlyView.
Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim, In‐Kook Hwang, Kyoung‐Woong Moon, Kyongmo An, Kyung‐Jin Lee, Jae‐Hyeon Ko, Byong‐Guk Park, Kwang‐Yong Choi, Chanyong Hwang   +8 more
wiley   +1 more source

4.68 GHz, 2.35 kW Single Mode All-Fiber Amplifier Using Nonlinear Phase Demodulation for SBS Suppression and Spectral Compression

IEEE Photonics Journal
The output power of fiber lasers with narrow-linewidth is typically limited by stimulated Brillouin scattering (SBS). Spectral broadening via phase modulation is preferred to suppress SBS, but its capability approaches the limit for a given linewidth and
Mengqi Zhang, Hui Shen, Jinwei Xie, Chuanfa Jia, Zhao Quan, Tao Liu, Yunfeng Qi, Lei Zhang, Chunlei Yu   +8 more
doaj   +1 more source

Photo‐Reconfigurable Supercoupling Induced Transparency in On‐Chip Topological Edge State Cavities

Advanced Materials, EarlyView.
A novel supercoupling induced transparency (SIT) is demonstrated in a valley‐Hall photonic crystal. The valley vortices enable the supercoupling between a leaky and a guided topological edge state cavity even across a distance of 4.3 wavelengths, inducing a transparency window with negligible reflection.
Wenhao Wang, Ranjan Singh
wiley   +1 more source